It's quite well known and documented that you can convert Street Fighter 2 Champion Edition to Hyper Fighting by simply replacing the three program eproms (6F, 7F and 8F).
Turbo Hyper Fighting upgrade / conversion isn't quite as simple, it also requres three graphics roms to be replaced. You will need the sf2hfj rom from mame (and sf2hf if going from CE).
First burn the program rom 23 location 8F on to a 27C4096/27C4002. Next burn the four graphics roms 3C - 6C on to 27C400 eproms and now for the part that caused me some confusion, roms 4C and 5C need to be swapped, so 4C in 5C and 5C in 4C.
If you started with a Champion Edition board you'll also need to replace eproms 21 and 22 (6F, 7F).
I also suggest installing a 12mhz oscillator in place of the original 10mhz if you don't have a 'dash' motherboard, so that the game runs are the correct speed.
Hey Ace! I am absolutely struggling with a CPS-1 “Hyperfighting” cab of mine that is currently running what I believe is a Red Wave/ Final Victory type variant version similar to Rainbow. I have now tried ordering 2 sets of the 21,22 and 23 Eproms and neither sets have worked. I assume they work themselves but perhaps my system is further modified than what I can see as a lamen. I just tried swapping the 4C and 5C as per your blog and no change. I popped my Red Wave kit back in and reverted the 4 and 5cs and all is well. Any tips for where to go from here?
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